const Koa = require('koa')
const app = new Koa()
const parameter = require('koa-parameter')
const views = require('koa-views')
const json = require('koa-json')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')

const cors = require('koa2-cors')
app.use(cors());

const error = require('koa-json-error');
const route = require('./routes/index')

// error handler
app.use(error({
  postFormat: (e, {stack, ...rest}) => process.env.NODE_ENV === 'production' ? rest : {stack, ...rest}
}))
app.use(parameter(app))
// 链接mongo数据
const mongoose = require('mongoose');
mongoose.connect('mongodb://mt:mt9402@49.234.61.31:27017/mtText').then(() => console.log('Connected!'));

// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}))
app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
  extension: 'pug'
}))

// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(route.routes(), route.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
  console.error('server error', err, ctx)
});

module.exports = app
